Question

Point D is between points R and S on RS(line on top). Find the length of-
RS(line on top) if RD = 7 and DS = 12.

A:1
B:5
C:18
D:19



Please select the best answer from the choices provided


A?
B?
C?
D?

Answer 1

Answer:

The best answer from the choices provided is

Option D : 19

Step-by-step explanation:

Given:

RS is a Straight Line,

Point D is between points R and S on RS(line on top)

Such that

RD = 7

DS  = 12

To Find:

Length of RS = ?

Solution:

RS is a Straight Line  ................Given

Point D is between points R and S on RS(line on top)

Such that

R - D - S

Therefore By Line Addition Property we will have

$l(RS)=l(RD)+l(DS).........................R-D-S$

Substituting the given values we get

$l(RS)=7+12\\\\l(RS)=19\ units$

The best answer from the choices provided is

Option D : 19